Search Query - How can I best SEARCH for spam (for deletion).

[smallbusinesshelper]

Hi,

Apologies if I'm posted in the wrong place here.

Firstly, I've been trying to find emails where the TO: field shows blank (as much spam comes in looking this way.

Secondly, I've also been trying to figure out how to use the search field to find text with spaces eg.SUBJECT:" dating" shows me emails that also have the word "updating" in it's subject; I don't want this, I want to find & delete all email which has "dating" in the subject line, as it's all junk/spam.